Bug 379452

Summary: Plasma crash while searching for application from Application Launcher
Product: [Frameworks and Libraries] frameworks-solid Reporter: David H. Gutteridge <dhgutteridge>
Component: generalAssignee: Lukáš Tinkl <lukas>
Status: RESOLVED WORKSFORME    
Severity: crash CC: arcadiy, bhush94, kdelibs-bugs, keith.miyake, lukas.karas, nate, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.38.0   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=381478
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description David H. Gutteridge 2017-05-02 21:42:26 UTC 
Application: plasmashell (5.9.5)

Qt Version: 5.7.1
Frameworks Version: 5.33.0
Operating System: Linux 4.10.13-200.fc25.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
While I was searching for an application using Application Launcher's search functionality, Plasma crashed.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9af048c3c0 (LWP 6638))]

Thread 18 (Thread 0x7f9a00df1700 (LWP 10066)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 17 (Thread 0x7f9a015f2700 (LWP 10065)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#9  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#10 0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#11 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#12 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 16 (Thread 0x7f9a01df3700 (LWP 10064)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 15 (Thread 0x7f9a025f4700 (LWP 10063)):
[KCrash Handler]
#6  0x00007f9b0381ef47 in Solid::Backends::UDisks2::DeviceBackend::checkCache(QString const&) const () from /lib64/libKF5Solid.so.5
#7  0x00007f9b0381f40c in Solid::Backends::UDisks2::DeviceBackend::prop(QString const&) const () from /lib64/libKF5Solid.so.5
#8  0x00007f9b0380bf9d in Solid::Backends::UDisks2::Manager::updateBackend(QString const&) () from /lib64/libKF5Solid.so.5
#9  0x00007f9b0380de8d in Solid::Backends::UDisks2::Manager::slotInterfacesRemoved(QDBusObjectPath const&, QStringList const&) () from /lib64/libKF5Solid.so.5
#10 0x00007f9afe111721 in QMetaObject::activate(QObject*, int, int, void**) () from /lib64/libQt5Core.so.5
#11 0x00007f9b03847381 in OrgFreedesktopDBusObjectManagerInterface::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) () from /lib64/libKF5Solid.so.5
#12 0x00007f9b0384a6c5 in OrgFreedesktopDBusObjectManagerInterface::qt_metacall(QMetaObject::Call, int, void**) () from /lib64/libKF5Solid.so.5
#13 0x00007f9afe7f2640 in QDBusConnectionPrivate::deliverCall(QObject*, int, QDBusMessage const&, QVector<int> const&, int) () from /lib64/libQt5DBus.so.5
#14 0x00007f9afe1127e9 in QObject::event(QEvent*) () from /lib64/libQt5Core.so.5
#15 0x00007f9afe9b6ecc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#16 0x00007f9afe9be671 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#17 0x00007f9afe0ea6fa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#18 0x00007f9afe0ecde0 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#19 0x00007f9afe138653 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#20 0x00007f9af5e93e52 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#21 0x00007f9af5e941d0 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#22 0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#23 0x00007f9afe1386cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#24 0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#25 0x00007f9a1d36557e in SearchRunner::match(Plasma::RunnerContext&) () from /usr/lib64/qt5/plugins/krunner_baloosearchrunner.so
#26 0x00007f9a3f96a6e8 in Plasma::AbstractRunner::performMatch(Plasma::RunnerContext&) () from /lib64/libKF5Runner.so.5
#27 0x00007f9a3ee4c1b8 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /lib64/libKF5ThreadWeaver.so.5
#28 0x00007f9a3ee4ad00 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () from /lib64/libKF5ThreadWeaver.so.5
#29 0x00007f9a3ee4a810 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#30 0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#31 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#32 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 14 (Thread 0x7f9a02df5700 (LWP 10062)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#9  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#10 0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#11 0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#12 0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#13 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#14 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f9a035f6700 (LWP 10061)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f9a03df7700 (LWP 10060)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9a1e6a2700 (LWP 10059)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9afdf4b04a in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9a3ee48880 in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () from /lib64/libKF5ThreadWeaver.so.5
#3  0x00007f9a3ee4ca38 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#4  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#5  0x00007f9a3ee4ca92 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#6  0x00007f9a3ee479fd in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () from /lib64/libKF5ThreadWeaver.so.5
#7  0x00007f9a3ee4a8c9 in ThreadWeaver::Thread::run() () from /lib64/libKF5ThreadWeaver.so.5
#8  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#9  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#10 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9a1eea7700 (LWP 7503)):
#0  0x00007f9afd33201d in poll () from /lib64/libc.so.6
#1  0x00007f9af275cc91 in poll_func () from /lib64/libpulse.so.0
#2  0x00007f9af274e4a1 in pa_mainloop_poll () from /lib64/libpulse.so.0
#3  0x00007f9af274eb3e in pa_mainloop_iterate () from /lib64/libpulse.so.0
#4  0x00007f9af274ebf0 in pa_mainloop_run () from /lib64/libpulse.so.0
#5  0x00007f9af275cbd9 in thread () from /lib64/libpulse.so.0
#6  0x00007f9af1ee41d8 in internal_thread_func () from /usr/lib64/pulseaudio/libpulsecommon-10.0.so
#7  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#8  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9a30c1a700 (LWP 7502)):
#0  0x00007f9afdf42a19 in QMutex::lock() () from /lib64/libQt5Core.so.5
#1  0x00007f9afe1385af in postEventSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#2  0x00007f9af5e93bc9 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9af5e94104 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9b011be4e5 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#9  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9a34224700 (LWP 6986)):
#0  0x00007f9afd33201d in poll () from /lib64/libc.so.6
#1  0x00007f9af5e94166 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9a35ade2c7 in KCupsConnection::run() () from /lib64/libkcupslib.so
#7  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9a45ad2700 (LWP 6941)):
#0  0x00007f9af5e938e2 in g_main_context_query () from /lib64/libglib-2.0.so.0
#1  0x00007f9af5e940d8 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9b01b498b6 in QQuickPixmapReader::run() () from /lib64/libQt5Quick.so.5
#7  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9ad35a8700 (LWP 6855)):
#0  0x00007f9afc68a460 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f9b03c0a2f4 in QTWTF::TCMalloc_PageHeap::scavengerThread() () from /lib64/libQt5Script.so.5
#2  0x00007f9b03c0a339 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /lib64/libQt5Script.so.5
#3  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#4  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f9add51e700 (LWP 6854)):
#0  0x00007f9afd33201d in poll () from /lib64/libc.so.6
#1  0x00007f9af5e94166 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9b011be4e5 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#7  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#8  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#9  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f9adefc4700 (LWP 6759)):
#0  0x00007f9afe137110 in QTimerInfoList::repairTimersIfNeeded() () from /lib64/libQt5Core.so.5
#1  0x00007f9afe1371a3 in QTimerInfoList::timerWait(timespec&) () from /lib64/libQt5Core.so.5
#2  0x00007f9afe13838c in timerSourcePrepareHelper(GTimerSource*, int*) () from /lib64/libQt5Core.so.5
#3  0x00007f9afe138455 in timerSourcePrepare(_GSource*, int*) () from /lib64/libQt5Core.so.5
#4  0x00007f9af5e9369d in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#5  0x00007f9af5e9408b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#6  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#7  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#8  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#9  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#10 0x00007f9b011be4e5 in QQmlThreadPrivate::run() () from /lib64/libQt5Qml.so.5
#11 0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#12 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#13 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f9ae4a63700 (LWP 6688)):
#0  0x00007f9afd32dbed in read () from /lib64/libc.so.6
#1  0x00007f9af5ed84d0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f9af5e93c83 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9af5e94104 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f9afe1386eb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#7  0x00007f9afdf465e3 in QThread::exec() () from /lib64/libQt5Core.so.5
#8  0x00007f9afe7e6739 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#9  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#10 0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#11 0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f9ae6294700 (LWP 6657)):
#0  0x00007f9afd33201d in poll () from /lib64/libc.so.6
#1  0x00007f9b02515d10 in _xcb_conn_wait () from /lib64/libxcb.so.1
#2  0x00007f9b02517aa9 in xcb_wait_for_event () from /lib64/libxcb.so.1
#3  0x00007f9ae98c9d69 in QXcbEventReader::run() () from /lib64/libQt5XcbQpa.so.5
#4  0x00007f9afdf4a9ca in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f9afc6846ca in start_thread () from /lib64/libpthread.so.0
#6  0x00007f9afd33df7f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f9af048c3c0 (LWP 6638)):
#0  0x00007f9af5ed9879 in g_mutex_lock () from /lib64/libglib-2.0.so.0
#1  0x00007f9af5e936aa in g_main_context_prepare () from /lib64/libglib-2.0.so.0
#2  0x00007f9af5e9408b in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#3  0x00007f9af5e9427c in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#4  0x00007f9afe1386cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f9afe0e968a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#6  0x00007f9afe0f118c in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#7  0x000055a46e05a192 in main ()

Reported using DrKonqi
Comment 1 Christoph Feck 2017-05-31 15:43:17 UTC 
*** Bug 379640 has been marked as a duplicate of this bug. ***
Comment 2 Christoph Feck 2017-06-26 14:59:29 UTC 
*** Bug 381339 has been marked as a duplicate of this bug. ***
Comment 3 Christoph Feck 2017-09-17 22:53:21 UTC 
*** Bug 384159 has been marked as a duplicate of this bug. ***
Comment 4 Christoph Feck 2017-09-17 22:56:21 UTC 
*** Bug 384353 has been marked as a duplicate of this bug. ***
Comment 5 Christoph Feck 2017-10-18 12:36:26 UTC 
*** Bug 385505 has been marked as a duplicate of this bug. ***
Comment 6 David H. Gutteridge 2017-11-05 23:07:44 UTC 
This is still an issue for me with Plasma 5.10.5 with Qt 5.9.2 and KDE Frameworks 5.38. It just happened again; this time it brought down the Task Manager panel, which restored itself (albeit out of order) after around a minute.
Comment 7 Justin Zobel 2020-12-17 05:35:42 UTC 
Thank you for the crash report.

As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved.

I have set the bug status to "needsinfo" pending your response, please change back to "reported" or "resolved/worksforme" when you respond, thank you.
Comment 8 David H. Gutteridge 2020-12-28 23:44:06 UTC 
I'm not able to reproduce this with Plasma 5.20.4 with Qt 5.15.1 and KDE Frameworks 5.75. I think it can be closed.